Contribution of the Bioball head-neck adapter to the restoration of femoral offset in hip revision arthroplasty with retention of a well-fixed cup and stem.

Purpose: Failure to restore the femoral offset of the native hip is a potential cause of dysfunctional hip arthroplasty. The aim of this study was to report our experience of using a modular head-neck adapter in revision THA, specifically analyzing its usefulness as a tool to correct a slightly diminished femoral offset.

Materials And Methods: This was a retrospective single-center study including all hip revisions performed at our institution from January 2017 to March 2022 where the BioBall head-neck metal adapter was used.